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CN-115030033-B - Rib force-transferring cable clip

CN115030033BCN 115030033 BCN115030033 BCN 115030033BCN-115030033-B

Abstract

The invention discloses a rib force-transferring type cable clamp which comprises an upper cable clamp half and a lower cable clamp half, wherein a plurality of upper side ribs protruding along the circumference are distributed on the periphery of the upper cable clamp half along the axial distance, the upper side ribs correspond to the area of the upper radius of the cable clamp towards the side part to form an upper side pressure-bearing part capable of penetrating a locking bolt pair, a plurality of lower side ribs protruding along the circumference are distributed on the periphery of the lower cable clamp half along the axial distance, and the lower side ribs correspond to the area of the lower radius of the cable clamp towards the side part to form a lower side pressure-bearing part capable of penetrating the locking bolt pair. The invention can ensure that the main cable can be tightly held by the axial direction and the circumferential direction of the upper half body and the lower half body, and simultaneously can generate stress concentration at each axial node of the upper half body and the lower half body corresponding to the position of the rib, thereby generating locking stress similar to wave-shaped concentrated force transmission in the axial direction, enabling the cable clamp to generate transverse pressure of multiple nodes on the held main cable along the axial direction, and improving the anti-skid bearing capacity of the cable clamp on the main cable.

Inventors

  • YU JIE
  • LIU DIZHENG

Assignees

  • 四川盛达安科交通科技有限公司

Dates

Publication Date
20260512
Application Date
20220715

Claims (8)

  1. 1. The rib force transmission type cable clamp comprises an upper cable clamp half (1) and a lower cable clamp half (2), and is characterized in that: A plurality of upper ribs (11) which are formed along the circumference in a protruding way are distributed on the periphery of the upper half (1) of the cable clamp along the axial interval, and the upper ribs (11) correspond to the radial side part area of the upper half (1) of the cable clamp to form an upper pressure-bearing part capable of penetrating and installing a locking bolt pair (3); The upper rib (11) corresponds to the top area of the radial side part of the upper half (1) of the cable clamp and is provided with a transverse fold extension forming platform part used for connecting an upper bearing plate; The cable clamp is characterized in that the same upper bearing plate is connected between the platform parts of at least two adjacent upper ribs (11) on the same radial side of the upper half (1) of the cable clamp, and bolt holes capable of penetrating and installing locking bolt pairs (3) are formed in the upper bearing plate in the area corresponding to the space between the two adjacent upper ribs (11); a plurality of lower ribs (21) which are formed along the circumference in a protruding way are distributed on the periphery of the lower half (2) of the cable clamp along the axial interval, and the lower ribs (21) correspond to the radial side part area of the lower half (2) of the cable clamp to form a lower pressure-bearing part capable of penetrating and installing a locking bolt pair (3); The lower rib (21) corresponds to the bottom area of the radial side part of the lower half (2) of the cable clamp and is provided with a transverse fold extension forming platform part used for connecting a lower bearing plate; The cable clamp is characterized in that the same lower bearing plate is connected between the platform parts of at least two adjacent lower ribs (21) on the same radial side of the lower half (2) of the cable clamp, and bolt holes capable of penetrating and installing locking bolt pairs (3) are formed in the lower bearing plate in the area corresponding to the space between the two adjacent lower ribs (21); at least two groups of lug plates formed by protruding along the axial length are distributed at the bottom of the lower half (2) of the cable clamp along the radial interval; Each set of ear plates is provided with at least one pin hole for a pinned sling/boom.
  2. 2. A rib force-transmitting cable clamp according to claim 1 wherein: each channel upper rib (11) on the cable clamp upper half (1) is in one-to-one corresponding matching relationship with each channel lower rib (21) on the cable clamp lower half (2); a positioning plate (26) extending upwards is arranged between at least two adjacent lower side ribs (21) on the same radial side of the lower half (2) of the rope clip; In the circumferential butt joint combination process of the upper cable clamp half (1) and the lower cable clamp half (2), a positioning plate (26) on the lower cable clamp half (2) is embedded between two corresponding adjacent upper side ribs (11) on the upper cable clamp half (1).
  3. 3. A rib force-transmitting cable clamp according to claim 1 wherein: The upper side ribs of each track on the upper half of the cable clamp are in one-to-one correspondence with the lower side ribs of each track on the lower half of the cable clamp; A positioning plate extending downwards is arranged between at least two adjacent upper side ribs with the same radius on the cable clamp; In the circumferential butt joint combination process of the upper half of the cable clamp and the lower half of the cable clamp, the locating plate on the upper half of the cable clamp is embedded between the corresponding adjacent two lower side ribs on the lower half of the cable clamp.
  4. 4. A rib force-transmitting cable clamp according to claim 1 wherein: The upper side ribs of each track on the upper half of the cable clamp are in one-to-one correspondence with the lower side ribs of each track on the lower half of the cable clamp; a positioning plate extending downwards is arranged between at least two adjacent upper side ribs on the same side of the cable clamp in the radial direction; A positioning plate extending upwards is arranged between at least two adjacent lower side ribs on the same side along the lower radius of the cable clamp, and the positioning plate on the lower half of the cable clamp and the positioning plate on the upper half of the cable clamp are arranged in a staggered manner; In the circumferential butt joint combination process of the upper half of the cable clamp and the lower half of the cable clamp, the positioning plate on the upper half of the cable clamp is embedded between the corresponding adjacent two lower side ribs on the lower half of the cable clamp, and the positioning plate on the lower half of the cable clamp is embedded between the corresponding adjacent two upper side ribs on the upper half of the cable clamp.
  5. 5. A rib-transfer cable clip according to claim 2, 3 or 4 wherein: the locating plate is arranged in the axial middle area of the lower half of the cable clamp/the upper half of the cable clamp.
  6. 6. A rib-transfer cable clip according to claim 1,2, 3 or 4 wherein: in the circumferential butt joint combination process of the upper half (1) of the cable clamp and the lower half (2) of the cable clamp, butt joint combination is carried out by a middle joint surface with a straight edge structure; the bolt hole on the upper side bearing plate of the upper half (1) of the rope clip is positioned at the outer side of the middle joint surface of the upper half (1) of the rope clip; The bolt hole on the lower side bearing plate of the lower half (2) of the rope clip is positioned at the outer side of the middle joint surface of the lower half (2) of the rope clip.
  7. 7. A rib force-transmitting cable clamp according to claim 1 wherein: The cable clamp is of a steel plate welding combined structure; Each group of lug plates at the bottom of the lower half (2) of the cable clamp divides the lower rib (21) distributed on the periphery of the lower half (2) of the cable clamp into a plurality of sections along the radial direction, and two adjacent sections of the lower rib (21) are welded on the left side and the right side of the corresponding lug plate.
  8. 8. The rib force-transmitting cable clamp of claim 7 wherein: The lug plates at the bottom of the cable clamp lower half (2) are two groups distributed at intervals, the two groups of lug plates divide a lower rib (21) distributed on the periphery of the cable clamp lower half (2) into a lower side rib plate I (211), a lower side middle rib plate (212) and a lower side rib plate II (213) three sections along the radial direction, and the width of the lower side middle rib plate (212) is at least one time of the width of the lower side rib plate I (211)/the width of the lower side rib plate II (213).

Description

Rib force-transferring cable clip Technical Field The invention relates to a cable clamp of a suspension bridge, in particular to a cable clamp structure of a rib force transmission mode. Background In the suspension bridge structure, dynamic and static loads of the bridge deck are transferred to the main cable through the sling (suspender), and connection between the sling and the main cable is realized through a cable clamp tightly held on the main cable. Therefore, the forming quality of the cable clamp and the reliability of the clasping connection between the cable clamp and the main cable are directly important to the stability and safety of the use of the suspension bridge. The molding materials of the clips may be classified into cast clips (for example, the technology disclosed in chinese patent literature is called "a pin-joint clip", publication No. CN 202969271U, publication No. 2013, 06, 05, etc.), and welded clips (for example, the technology disclosed in chinese patent literature is called "an all-welded clip, publication No. CN 107217595A, publication No. 2017, 09, 29, etc.). Depending on the connection structure between the clip and the sling, the saddle-riding clip (for example, the technology disclosed in chinese patent literature is named "saddle-riding clip", publication No. CN 202969272U, publication No. 2013, technology of 06/05, etc.), and pin-locking clip (for example, the technology of publication No. CN 202969271U, etc.) may be classified. At present, in a suspension bridge structure, no matter what structural type of cable clamp is adopted, the clasping connection between the cable clamp and a main cable is usually realized in a shell force transmission mode, namely, the locking force of a locking bolt pair penetrating between abutting bearing platforms of adjacent halves forming the cable clamp is directly and basically uniformly acted on the main cable by each half, so that the anti-skid bearing clasping of the cable clamp on the main cable is realized. The anti-slip bearing capacity of the cable clamp on the main cable is mainly determined by the friction coefficient between the main cable and the cable clamp, the effective fastening force of the high-strength locking bolt pair and the transverse pressure of the cable clamp to the main cable. The shell force transmission mode cable clamp can directly and basically uniformly act on the main cable through the locking force of the locking bolt pair through each half body, but is not beneficial to improving the transverse pressure of the cable clamp to the main cable, so that the anti-skid bearing capacity of the cable clamp on the main cable is easily influenced along with the change of the structural form and the diameter of the main cable in the bridge deck live load change process. Specifically, in the process of greatly changing the bridge deck live load of the suspension bridge, particularly in the process of extreme change, axial stretching of the main cable can cause structural form change of the cable body and reduction of the diameter of the cable body to a certain extent due to poisson effect, which can lead to reduction of effective fastening force of the high-strength locking bolt pair, and transverse pressure of the cable clamp to the main cable is attenuated, so that the anti-slip bearing capacity of the cable clamp on the main cable is reduced. The chinese patent literature discloses a technology called a "clip type suspension bridge cable clamp" (publication No. CN 204282218U, publication No. 2015, year 04, month 22), in which specifically, an upper half body constituting the cable clamp is assembled on a lower half body through circumferential butt joint of a plurality of U-bolts riding on the outer periphery, forming a clip type circumferential butt joint assembly. In theory, the technology can lead the upper half body to realize the relatively concentrated arrangement of the stress of the rib force transmission mode on the main cable to a certain extent through the U-shaped bolts straddling the periphery of the upper half body. However, the force transmission of the rib of the upper half body of the technology is realized, the downward pulling force of the U-shaped bolt on the periphery of the upper half body is needed to be relied on, the high-precision matching degree of the U-shaped bolt and the periphery of the upper half body and the high-precision locking of the pressed yield of the upper half body matched with the U-shaped bolt are needed, and the technical requirements are difficult to meet in practical application. Even if the requirement is met, the downward pulling of the two ends of the U-shaped bolt can only slightly transfer force to the rib on the periphery of the upper half body, and under the action of the U-shaped bolt, the upper half body forming the cable clamp can only transfer force to the rib on the main cable, and the lower half body still transfers force to the shell on the main cable.